Plasmonic nanoparticles sensors utilizing hybrid modes, electrical excitation, and anisotropic particles

Andre Dathe; Pavel Kliuiev; Jacqueline Jatschka; Uwe Hübner; Mario Ziegler; Matthias Thiele; Steffen Trautmann; Janina Wirth; Frank Garwe; Andrea Csaki; Ondrej Stranik; Wolfgang Fritzsche

doi:10.1117/12.2190102

21 August 2015 Plasmonic nanoparticles sensors utilizing hybrid modes, electrical excitation, and anisotropic particles

Andre Dathe, Pavel Kliuiev, Jacqueline Jatschka, Uwe Hübner, Mario Ziegler, Matthias Thiele, Steffen Trautmann, Janina Wirth, Frank Garwe, Andrea Csaki, Ondrej Stranik, Wolfgang Fritzsche

Author Affiliations +

Proceedings Volume 9550, Biosensing and Nanomedicine VIII; 95500T (2015) https://doi.org/10.1117/12.2190102
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

Abstract

Surface Plasmon Resonance (SPR) in metallic nanostructures is an optical effect that can be exploited for the detection of small molecules. There is a broad range of metallic nanostructures supporting different SPR modes, and nanostructures can be even geometrically combined leading to the creation of new hybridised SPR modes. In our study, we investigated the properties of a hybridised SPR mode (gap modes GM) created by the placement of metallic nanoparticles onto metallic layers and its use as a sensitive sensor. A tunneling current passing through a metal-insulator-semiconductor structure can generate supported SPR modes that can be scattered through GM, which was experimentally confirmed. Moreover, we were able to experimentally follow the degradation of anisotropic (silver nanoprism) nanoparticles under ambient conditions in real time. Using atomic force microscopy and optical spectroscopy we observed an anisotropic corrosion that is starting from the tips of the nanoparticles.

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Andre Dathe, Pavel Kliuiev, Jacqueline Jatschka, Uwe Hübner, Mario Ziegler, Matthias Thiele, Steffen Trautmann, Janina Wirth, Frank Garwe, Andrea Csaki, Ondrej Stranik, and Wolfgang Fritzsche "Plasmonic nanoparticles sensors utilizing hybrid modes, electrical excitation, and anisotropic particles", Proc. SPIE 9550, Biosensing and Nanomedicine VIII, 95500T (21 August 2015); https://doi.org/10.1117/12.2190102

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